Rudbeckia plant named ‘ET RDB 410’

ABSTRACT

A new and distinct cultivar of  Rudbeckia  plant named ‘ET RDB 410’, characterized by its compact, upright to outwardly spreading and mounded plant habit; freely branching growth habit; relatively small leaves; freely flowering habit; single-type inflorescences with yellow and greyed orange bi-colored ray florets positioned above the foliar plane on strong peduncles; and good postproduction longevity.

Botanical designation: Rudbeckia hybrid.

Cultivar denomination: ‘ET RDB 410’.

BACKGROUND OF THE INVENTION

The present invention relates to a new and distinct cultivar of Rudbeckia plant, botanically known as Rudbeckia hybrid and hereinafter referred to by the name ‘ET RDB 410’.

The new Rudbeckia plant is a product of a planned breeding program conducted by the Inventors in Boijl, The Netherlands. The objective of the breeding program is to create new compact Rudbeckia plants with small leaves and attractive long-lasting inflorescences supported by strong peduncles.

The new Rudbeckia plant originated from a cross-pollination made by the Inventors in Boijl, The Netherlands in 2010 of a proprietary selection of Rudbeckia hirta×Echinacea purpurea identified as code number 26-8619, not patented, as the female, or seed parent with a proprietary selection of Rudbeckia hirta identified as code number 08-1325, not patented, as the male, or pollen, parent. The new Rudbeckia plant was discovered and selected by the Inventor as a single flowering plant from within the progeny of the stated cross-pollination in a controlled environment in Boijl, The Netherlands in 2011.

Asexual reproduction of the new Rudbeckia by tissue culture in a controlled greenhouse environment in Boijl, The Netherlands since 2011 has shown that the unique features of this new Rudbeckia are stable and reproduced true to type in successive generations.

SUMMARY OF THE INVENTION

Plants of the new Rudbeckia have not been observed under all possible combinations of environmental conditions and cultural practices. The phenotype may vary somewhat with variations in environmental conditions such as temperature and light intensity, without, however, any variance in genotype.

The following traits have been repeatedly observed and are determined to be the unique characteristics of ‘ET RDB 410’. These characteristics in combination distinguish ‘ET RDB 410’ as a new and distinct Rudbeckia plant:

-   -   1. Compact, upright to outwardly spreading and mounded plant         habit.     -   2. Freely branching growth habit.     -   3. Relatively small leaves.     -   4. Freely flowering habit.     -   5. Single-type inflorescences with yellow and greyed orange         bi-colored ray florets positioned above the foliar plane on         strong peduncles.     -   6. Good postproduction longevity.

Plants of the new Rudbeckia differ from plants of the female parent selection in the following characteristics:

-   -   1. Plants of the new Rudbeckia are more compact and denser than         plants of the female parent selection.     -   2. Inflorescences of plants of the new Rudbeckia are longer         lasting than inflorescences of plants of the female parent         selection.

Plants of the new Rudbeckia differ from plants of the male parent selection in the following characteristics:

-   -   1. Plants of the new Rudbeckia are more compact and denser than         plants of the male parent selection.     -   2. Inflorescences of plants of the new Rudbeckia are longer         lasting than inflorescences of plants of the male parent         selection.

Plants of the new Rudbeckia can be compared to Rudbeckia hirta×Echinacea purpurea ‘ET-RDB 03’, disclosed in U.S. Plant Pat. No. 25,206. Plants of the new Rudbeckia differ primarily from plants of ‘ET-RDB 03’ in the following characteristics:

-   -   1. Inflorescences of plants of the new Rudbeckia are larger and         more rounded than inflorescences of plants of ‘ET-RDB 03’.     -   2. Plants of the new Rudbeckia and ‘ET-RDB 03’ differ in ray         floret color as plants of ‘ET-RDB 03’ have dark reddish         bronze-colored ray florets.

Plants of the new Rudbeckia can be compared to Rudbeckia hirta×Echinacea purpurea ‘ET-RDB 01’, disclosed in U.S. Plant Pat. No. 25,221. Plants of the new Rudbeckia differ primarily from plants of ‘ET-RDB 01’ in the following characteristics:

-   -   1. Plants of the new Rudbeckia are shorter than plants of         ‘ET-RDB 01’.     -   2. Inflorescences of plants of the new Rudbeckia are larger and         more rounded than inflorescences of plants of ‘ET-RDB 01’.     -   3. Plants of the new Rudbeckia and ‘ET-RDB 01’ differ in ray         floret color as plants of ‘ET-RDB 01’ have yellow, orange and         reddish-colored ray florets.

BRIEF DESCRIPTION OF THE PHOTOGRAPHS

The accompanying photographs illustrate the overall appearance of the new Rudbeckia showing the colors as true as it is reasonably possible to obtain in colored reproductions of this type. Colors in the photographs may differ slightly from the color values cited in the detailed botanical description which accurately describe the colors of the new Rudbeckia.

The photograph on the first sheet comprises a side perspective view of a typical flowering plant of ‘ET RDB 410’ grown in a container.

The photograph on the second sheet is a close-up view of a typical inflorescence of ‘ET RDB 410’.

DETAILED BOTANICAL DESCRIPTION

The aforementioned photographs and following observations, measurements and values describe plants grown in 2.5-liter containers during the spring in an outdoor nursery in Boijl, The Netherlands and under cultural conditions typical of commercial Rudbeckia production. During the production of the plants, day temperatures averaged 16° C. and night temperatures averaged 10° C. Plants were 15 weeks old when the photographs and the detailed description were taken. In the following description, color references are made to The Royal Horticultural Society Colour Chart, 2001 Edition, except where general terms of ordinary dictionary significance are used.

-   Botanical classification: Rudbeckia hybrid ‘ET RDB 410’. -   Parentage:     -   -   Female, or seed, parent.—Proprietary selection of Rudbeckia             hirta×Echinacea purpurea identified as code number 26-8619,             not patented.         -   Male, or pollen, parent.—Proprietary selection of Rudbeckia             hirta identified as code number 08-1325, not patented. -   Propagation:     -   -   Type.—By tissue culture.         -   Time to initiate roots.—About seven to eight days at soil             temperatures about 15° C. and ambient temperatures about 20°             C.         -   Time to produce a rooted young plants.—About four weeks at             soil temperatures about 15° C. and ambient temperatures             about 20° C.         -   Root description.—Medium in thickness; fleshy; color, close             to 162C.         -   Rooting habit.—Freely branching; medium density. -   Plant description:     -   -   Plant and growth habit.—Herbaceous perennial; compact,             upright to outwardly spreading and mounded plant habit;             strong and freely branching growth habit with numerous             lateral branches, dense and bushy appearance; vigorous             growth habit; medium growth rate.         -   Plant height.—About 30 cm to 40 cm.         -   Plant width.—About 40 cm to 50 cm.         -   Lateral branches (peduncles).—Length: About 10 cm to 20 cm.             Diameter: About 4 mm to 6 mm. Internode length: About 1 cm             to 2.5 cm. Angle: Upright to outwardly spreading. Strength:             Strong. Texture: Pubescent, rough. Color: Close to 144A. -   Leaf description:     -   -   Arrangement.—Basal leaves, typically opposite and cauline             leaves, typically alternate; simple; sessile.         -   Length.—About 10 cm to 20 cm.         -   Width.—About 2.5 cm to 5 cm.         -   Shape.—Oblanceolate to obovate.         -   Apex.—Acute.         -   Base.—Attenuate to acute.         -   Margin.—Dentate.         -   Texture, upper and lower surfaces.—Pubescent; rough.         -   Venation pattern.—Pinnate.         -   Color.—Developing and fully expanded leaves, upper surface:             Close to 137A; venation, close to 145B. Developing and fully             expanded leaves, lower surface: Close to 137C; venation,             close to 138B. -   Inflorescence description:     -   -   Type and arrangement.—Single-type inflorescence form with             elliptic-shaped ray florets and tubular disc florets;             inflorescences borne on terminal and axillary peduncles             above and beyond the foliar plane on strong peduncles; ray             and disc florets arranged acropetally on a capitulum.         -   Fragrance.—None detected.         -   Flowering season.—Plants begin flowering about ten weeks             after planting; long flowering period, plants flower             continuously from mid-July until the end of October in The             Netherlands.         -   Inflorescence longevity.—Good postproduction longevity with             inflorescences lasting about eight to ten weeks on the             plant; inflorescences persistent.         -   Quantity of inflorescences.—Freely flowering habit,             typically more than 50 inflorescences developing per plant             during the flowering season.         -   Inflorescence buds.—Height: About 1 cm to 2 cm. Diameter:             About 2 cm to 4 cm. Shape: Round. Color: Close to 145A.         -   Inflorescences.—Diameter: About 10 cm to 14 cm. Depth             (height): About 3 cm to 4 cm. Diameter of disc: About 2.5 cm             to 3 cm. Receptacle height: About 1 cm to 2 cm. Receptacle             diameter: About 7 mm to 12 mm.         -   Ray florets.—Number of ray florets per inflorescence: About             12 to 17 arranged in a single whorl. Length: About 4 cm to             5 cm. Width: About 1.5 cm to 2 cm. Shape: Elliptic. Apex:             Emarginate. Base: Acute. Margin: Entire. Texture, upper             surface: Smooth, glabrous. Texture, lower surface: Rough,             glabrous. Color: When opening, upper surface: Close to 2A.             When opening, lower surface: Close to 150B. Fully opened,             upper surface: Close to 2A; proximally and at the apex,             overlain with close to 169A; color becoming closer to 169A             with development. Fully opened, lower surface: Close to 1B;             venation, close to 145A.         -   Disc florets.—Arrangement: Numerous disc florets massed at             center of receptacle. Length: About 1 cm to 3 cm. Width:             About 1 mm to 2 mm. Shape: Tubular, elongated. Apex: Obtuse.             Color: Apex: Initially, close to 77C and becoming closer to             200A with development. Mid-section: Close to 200B. Base:             Close to 200A.         -   Phyllaries.—Number of phyllaries per inflorescence: About 20             to 30 in about three whorls. Length: About 1.5 cm to 3 cm.             Width: About 3 mm to 7 mm. Shape: Lanceolate. Apex: Acute.             Base: Fused. Margin: Entire; slightly undulate. Texture,             upper and lower surfaces: Rough, pubescent. Color, upper             surface: Close to 143A. Color, lower surface: Close to 143C.         -   Reproductive organs.—Androecium (present on ray and disc             florets): Quantity per floret: One per floret. Filament             length: About 1 mm to 2 mm. Filament color: Close to 200B.             Anther shape: Round. Anther length: About 1 mm to 2 mm.             Anther color: Close to 200B. Pollen amount: Abundant. Pollen             color: Close to 12A. Gynoecium (present only on disc             florets): Quantity per floret: One per floret. Pistil             length: About 2 mm to 3 mm. Stigma shape: Two-parted. Stigma             color: Close to 200C. Style length: About 1 mm to 2 mm.             Style color: Close to 200C.         -   Seeds and fruits.—Seed and fruit production has not been             observed on plants of the new Rudbeckia. -   Disease & pest resistance: Plants of the new Rudbeckia have been     observed to be resistant to Powdery Mildew (Oidium sp. or     Sphaerotheca fuliginea). Resistance to pests and other pathogens     common to Rudbeckia plants has not been observed on plants of the     new Rudbeckia. -   Garden performance: Plants of the new Rudbeckia have been observed     to have good garden performance and to tolerate wind, rain and     temperatures from about −20° C. to about 40° C. 

It is claimed:
 1. A new and distinct Rudbeckia plant named ‘ET RDB 410’ as illustrated and described. 